Gripping, pasting, and folding mechanism.



G. W. SWIFT, JR. PASTING, AND FOLDING MECHANISM A'PPLIOATION FILED AUG.17,1908.

GRIPPING Patented June 14,1910.

4 SHEETS-SHEET 1.

WITNESSES:

QNVENTOR':

W. SWIFT, R; GRIPPING, PASTING, AND FOLDING MECHANISM. v APPLICATIONFILED AUG. 17, 1908; 961,324, Patented June 14, 1910.

w Q -@.W. ..M. ww w m w N v -WRW N '4 jfM G. W; SWIFT, JE- GBIPPING,PASTING, AND FOLDING MECHANISM.

APPLICATION FILED AUG. 17, 1908. Patented June 14, 1910.

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Patented 111119141910.

sons ll GEORGE.'W. SWIFT, Jill, OF BORDIFIJ'TQXUN, NEW JERSEY.

Application filed August 1'7, 1903.

"*L it his .zl l lac Specification of Letters Patent. ff aiq fl gi w vjig'bitfll,

serial no. nns

view of the gripping mechanism, showing To all whom it may concern:

Be it known that l, GEORGE VF. SWIFT, (in), of llordentown, 1n the countY oi lington and State of New Jersey, have in-' vented a. certain newendusefnl improve ment in Gripping, Pasting, Folding Mechanism, whereofthe following a specification, reference being had to the accompanyingdrawings.

My invention relates to mechanism adap ed to intermittently grip andrelease a continuously progressed. Web of paper or other flexiblefabric, and adjustable to cooperate with such webs of diiferent Widths.Ashcroinafter described, said Web may be a flat tube adapted to form abag or envelop, and said gripping mechanism cooperates. with mechanismarranged to paste and told hack- Ward the front edge of said Web as thelatter is carried it'orward by said gripping mechanism, and, then sealthe same as a flop closingsaid tube. As hereinafter described, saidgripping and pasting mechanisms are so correlated to effect the foldingoperation by a stationary bar; said gripping mechanism being arranged toalternately hold and re lease the Web with respect to a rotary cylinder,and said posting machanisin comprising a rotary type which not onlydeposits it print of paste upon said web edge flap, but then lifts thelatter so as to present it in position to be folded backwardly as thegripping mechanism carries the Web beneath sold bar; said flap beingthen sealed in folded position by a roller opposed to said cylinder.gripping mechanism comprises respectively opposite and counterpartpivoted levers ranged to he oscillated by come in concentric relationwith said rotary cylinder, against which said levers engage the Web,

ho fulcrunis of said levers are adjustable axially toward and away fromeach other in correspondence With the width ot the Web which is to beengaged.

My invention comprises the various nove features of construction andarrangement hereinafter more definitely specified.

In said drawings: Figure l is a side elevation of a convenient form ofmy inven tion. Fig. II is a vertical longitudinal sectional vie taken onthe line 11, ll, in Ill and 17'. Fig. III is an elevation s seen fromthe leftside of Fig. l on n as seen from the right side of h" rig. airagmentayplan .l-ls hereinafter described, said the front end of a flattubular Web having its front edge out to form :1 closure flap. Fig. V1is a vertical longitudinal sectional view, similar to Fig. ll, showingthe posi tion of the Web when the mcchanism'hes been shifted to foldhacl: its forward edge.

In said figures: the shaft-l, carrying the gear 2, is journalcd in thebearings 3 in the side frames i, and also carries the hollow rotarycylinder comprising the axially alined sections 6, having the respectivealined slots 7, in their peripheral walls, or tending toward eoch otherto the inner end Walls 8 of said sections. shaft 1- also carries theaxially adjustable collars 9, having the gripping levers 11 respectivelypivoted-thereon at 12, Said levers have their inner ends 13, curved tothe periphery of said cylinder. deferring to Fig. Bill: itmay he notedthat sold collars 9 are normally secured upon saidfsho. :t l by setscrews 15, but, it is to he understood. that when said. set screws areloosened, said so lars 9, may be shifted axially toward and away fromeach. other so that Webs 17 of different widths, may engaged by saidcurved ends 18, of said levers 11 against the periphery of saidcylinder; The outer ends of said gripping levers 11, are provided withrollers 19, arranged to successively engage the cams 20 and 21 said shaitg is rotated. 'Said cams 20, which raise the lovers 11 from saidcylinder, to receivethe Web, hove hubs mounted in stationary position onthe respective hearings 3, but said come 21, which raise said loversfrom the cylinder to release the Web, are secured on said hobs by theset screws as shown in ll. and IV, so that the position of said earns21, may be adjuster-lily varied although they are nor mally stationarylike the earns 20. be noted that said levers 11 are normally pressedinto engagement With the periphery of said cylinder by the springs 2%,which connect said levers with said collars 9. Said cylinder comprisingthe sections 6., conveniently serves as platen for the paste'depositingtype 2:}, wrvhich comprises a strip of 'rnbher or simi .1. resilientmaterial, mounted in ch :26, which is adjusts -y sec to the hinge 12-7on the hub 28 o the set screws 30, extending through the slots ill iisaid chose, and engaging said Said hub 28 is adjustebly secured oset-screw 32 on the shaft 34- which It may carries the gear 35, engagingthe gear 2, so that said type and cylinder are synchronously rotated.Said type is arranged to deposit paste upon the transverse forward edgeof the web 17 which as shown in Fig. V is cut to form a flap 38, whichwhen folded backwardly and sealed upon the fiat tube formed by the web,constitutes a closure for a bag or envelop. Said flap 38, which projectsbeyond the grippin levers, adheres to said type 25, after the latter ispressed thereon, and is retained by said type as the latter turns awayfromthe cylinder, so that as the latter continues to rotate, said flapis folded backwardly as shown in Fig. VI, being bent in alinement withthe forward edges of the curved ends 13 of the gripping levers, and, asthe type releases and passes away from said flap, the latter havingencountered the bar 40, is maintained in folded position by said bar.Said bar 40 is supported at its ends in the brackets 42,

which as best shown in Fig. II, are adjustably secured to the sideframes 4, by

the bolts 43, extending through the slots 45 in said brackets.

The creasing and sealing roller 46, is

' mounted on theshaft 47 journaled in .the

60 is continuously outer ends of the rocker arms 48 carried by the rockshaft 50, which is journaled in said frames 4.- Said shaft 47 extendsthrou h the slot 51 in the frames 4, shown in Fig. and is provided withthe pinion 52 engaging the gear 2 on said shaft 1. Said rocker arms 48are provided with the springs 54 which continually press the roller 46toward the cylinder 6 as shown in Fig. II. However, the eifectivepressure of said roller 46, upon the folded edge of the web, may beadjustably varied by the abutment screws. 56, which extend through thein s 57 projecting from the respective side rames 4; said abutmentscrews bein respectively opposed to the free ends of t e rocker arms 48,to limit the movement of said arms and the roller 46, toward saidcylinder 6.

The type 25 is conveniently supplied with a coating of adhesive by thepaste distributing roller 60, which it encounters at each revolution.Said roller 60- has its shaft 61 journaled in the side frames 4, and isprovided with the inion 62, in mesh with the gear 35 on the aft 34,whereby said roller rotated in contact with a roller dippin into asupply of adhesive.

Referring to i V, it is to be. understood that the flat tubiilar web 17is progressed senses modifications may be made therein withoutdepartingfrom the essential features of my invention as defined in the appendedclaims.

I claim l. The combination with a cylinder; of a gripping leverpivotally supported independently of said cylinder, arranged to normallyengage the periphery of said cylinder; a'stationary cam arranged toactuate said gripping lever; and, means arranged to adjust-ably securethe pivotal support of said lever to operatively engage different axialregions of said cam and cylinder.

2. The combination with a hollow rotary cylinder having a slot in itsperipheral wall; of a gripping lever pivoted to oscillate in said slot,and having one end arranged to engage the periphery of said cylinder; ofa cam, in invariable axial relation With said cylinder, but capable ofrelative rotary adjustment, arranged toactn'ate said gripping lever;and, means arranged to adjustably engage said grippin lever wit-hrespect to said cam and cylinder; whereby its opposite ends mayoperatively engage difierent axial regions of said cam and cylinder.

means arranged to adjustably secure said collar, at difierent axialregions on said shaft whereby the opposite ends of said lever mayoperatively engage different regions of said cam and cylinder.

4. The combination with a hollow rotary cylinder having a slot in itsperipheral wall; of a shaft for said cylinder; a collar arranged forindependent axial adjustment on said shaft; a gripping lever pivoted onsaid collar and arranged to oscillate in saidslot, and having one endexterior to said cylinder, arran ed to engage its periphery; meansarranged to actuate sa1d lever with respect to said periphery; and,vmeans arengelige one end 0t said lever with the perip said web; and, ana "ofa grippin ranged to adjustably secure said collar at variableregions on said shaft, whereby said gripping lever may engage differentregions of said actuating means and, said cylinder.

5, The combination with a hollow rotary cylinder havin a slot in itsperipheral wall; ever arrange to oscillate in said slot, an having oneend arranged to engage the peripher means continually ten ing to shiftsaid lever to engage said periphery; a stationary cam arranged tointermittently shift said lever to disengage said periphery; and, meansarranged to adjustablv engage the support of said lever, atvariablepositions relative to said cam and cylinder; whereby said-levermay operatively engage difi'erent regions of said cam and cylinder.

6. The combination with a hollow rotary cylinder, having a slot in itsperipheral wall; of .a shaft for said cylinder; a collar arranged foraxial. adjustment on said shaft; agripping lever pivoted on said collar,and arranged to oscillate in said slot; a spring mounted on said collar,tending to cry, of; said cylinder; and, a stationary camarranged toencounter the free end bf said gripping lever,- to shift said lever inopposition to saidspring, substantially as set forth.-

7. The combination with a hollow rotary cylinder, having a slot in itsperipheral wall; ofashaft fol-said cylinder; a collar carried by saidshaft andarranged for axial adjustment thereon; a gripping leverpivoted'on said collar, arranged to oscillate in said slot; :1 springtending to shift said gripping lever, to engage one end thereof withtheperiphery of said cylinder; a stationary cam eccentrically disposedwith respect to said shaft; and a rolleron the free end of said lever,arranged to encounter said cam and shift said lever in opposition tosaid spring to disenga e its end from said periphery, substantia lyasset forth.

8. The combination with a. hollow rotary cylinder having a slot in itsperipheral walls of a grippin r lever arranged to be axially adjustedwit respect to said cylinder, to oscillatein said slot and gri a webagainst the periphery of said cylin er; a paste depositin type arrangedto rotate in synchro nous re ation with said cylinder, to paste theforward edge of said web, and retain said ed e, while rotatingfrorn saidcylinder, to to dit in alinement with the gripping lever; a sealingroller arranged to press as torwardepasted edge against the w 1" eatmeans tending to said roller to ,nitment in oppts said resilient meansarranged to vari determine the minimum distance between said roller andcylinder, substantially set :r'orth.

of said cylinder;

9. The combination with a hollow rotary cylinder, having a slotin itsperipheral wall; of a gripping lever arranged to oscillate in said slotand engage a web against the periphery of said cylinder; a pastedepositing type arranged to paste the forward edge of said web, and tofold said edge in alinement with said levers, by retaining andliftingsaid pasted edge as the paste depositing type turns from said cylinder;a bar arranged to maintain said web folded; and a sealing roller springpressed toward said cylinder arranged to press said folded edge andcrease it in alinement with said lever and means arranged to adwstablylimit the said web, and to retain and lift said edge as said type turnsfrom said cylinder, and thereby fold the web in alinement with saidgripping levers; andmeans arranged to secure saidtype in radiallyadjustable relation with respect to said cylinder fi 11. The combinationwith a rotary cylinder; of gripping levers, arranged toengage a webagainst the periphery of said cylinder; a paste depositing type arrangedto rotate in opposition to said cylinder, to paste the transverse edgeof said web, and to retain and lift said edge as said type turns fromthe periphery of said cylinder, and thereby fold said web in alinenientwith the gripping levers; and, a spring pressed roller in gearedrelation with said cylinder arranged to press said web against saidcylinder to press its pasted region upon said web; and means arranged toadjust said roller in opposition to said spring to vary the degree ofpressure against said web, substantially as set forth.

'12. The combination with a rotary cylinder; of gripping levers arrangedto engage a Web against the periphery of said cylinder; a pastedepositing type arranged to rotate in opposition to said cylinder, topaste the transverse edge of said web, and to retain andlift said edgeas said type turns from the periphery of said cylinder, and thereby foldsaid web in alinement with said levers; a bar arranged to maintain saidedge in folded relation to the web body; and, a roller arranged to presssaid web against said cylinder to crease it where folded and ted regionupon said web; a 2g to press said roller toward cylinder; and, meansarranged to variably limit the movement (it saidroller toward said cylier,substs.tntially as set forth.

13 The combination with a rotary cylp 5 its inder; of gripping leversarranged to engage a Web against the periphery of said cylinder; a pastedepositing type arranged to rotate in opposition to said cylinder, topaste the edge of said web, and to retain and lift said edge as saidtype turns'from said cylinder, and thereby fold said web in alinementwith said gripping levers; a roller arranged to press said web againstsaid cylinder, as it is disen aged from said type, to crease it wherefolded, and to press its pasted region into engagement with said web; aspring tending to shift said roller toward said cylinder; and, means inoppositionto said spring arranged to adjust said roller with respect tosaid cylinder, whereby the degree of pressure upon the web may bevaried, substantially as set forth.

14. The combination with a rotary cylinder; of gripping levers arrangedto engage a web against the periphery of said cylinder; a pastedepositing type arranged to rotate in opposition to said cylinder, topaste the transverse edge of said web, and to retain and lift said edgeas said type turns from said cylinder, and thereby fold said web inalinement with said gripping levers; a rock shaft having opposed rockerarms; a roller journaled in the free ends of said arms; means tending topress said roller into engagement with said cylinder, whereby saidfolded edge of the web is creased where folded and its pasted regionpressed into engagement with said web; and, means arranged to vary thede cc of pressure of said roller toward said cy inder, substantially asset forth.

15. The combination with a hollow rotary cylinder, having slotsextending longitudinally in its peripheral wall; of gripping leversarranged to oscillate in said slots, to

engage a web against the periphery-of said' cylinder; a pastedepositingtypearranged to rotate in opposition to said cylinder, topaste the transverse edge of said web, and to retain and lift said edgeas said type turns from ,said cylinder, and thereby fold said web inalinement with the gripping levers;

a chase for said type having means for radial adjustment upon a rotaryhub; a roller arranged to press said web against said cylinder, tocrease it where folded, and to

